16616717910568 has 16 divisors (see below), whose sum is σ = 31156398472500. Its totient is φ = 8308344984576.

The previous prime is 16616717910539. The next prime is 16616717910581. The reversal of 16616717910568 is 86501971761661.

It can be written as a sum of positive squares in 2 ways, for example, as 16616564100964 + 153809604 = 4076342^2 + 12402^2 .

It is a super-2 number, since 2×16616717910568² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4714758 + ... + 7447306.

Almost surely, 2^{16616717910568} is an apocalyptic number.

It is an amenable number.

16616717910568 is a deficient number, since it is larger than the sum of its proper divisors (14539680561932).

16616717910568 is a wasteful number, since it uses less digits than its factorization.

16616717910568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492684 (or 3492680 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 64.

The spelling of 16616717910568 in words is "sixteen trillion, six hundred sixteen billion, seven hundred seventeen million, nine hundred ten thousand, five hundred sixty-eight".